[intseq.general]

# 21 Metaprogramming library [[meta]](./#meta)

## 21.2 Compile-time integer sequences [[intseq]](intseq#general)

### 21.2.1 General [intseq.general]

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/meta.tex#L21)

The library provides a class template that can represent an integer sequence[.](#1.sentence-1)

When used as an argument to a function template the template parameter pack defining the
sequence can be deduced and used in a pack expansion[.](#1.sentence-2)

[*Note [1](#note-1)*:

The index_sequence alias template is provided for the common case of
an integer sequence of type size_t; see also [[tuple.apply]](tuple.apply "22.4.6 Calling a function with a tuple of arguments")[.](#1.sentence-3)

— *end note*]